I used to have an electric stove but now I change to gas behind de place where the stove was there is only one outlet the 220 from the old one, but now the new gas stove have some electric digital things and I need a 110, how can I make to change that outlet from 220 to 110?

You would have difficulty doing that because there are 3 or 4 large gauge wire in the "240" outlet which is most likely a 120/240 volt outlet, You are probably better off to leave the 240V line in place and run a 120V line to the range. Is there a 120V line behind the wall where the stove is located? If so, you should be able tap off that outlet and put in an old work box with a new outlet. You will be only a little power for a digital timer and light. If you have a basement or crawl space, tap off another outlet and run a new line.